A device for cutting cavities, or the like, in heat severable material providing for undercut surfaces in the cavities said device comprising means to move the material with respect to heated, formed wires so that the desired cavity shape is cut.

A nasal atomized shower apparatus has a body defining an atomizing chamber, a pressurized air injector arranged at the region of feed of washing liquid to be atomized and facing the atomizing chamber and a conduit for discharging the washing liquid. The apparatus further includes a valve associated with the body, and adapted to control the pressure of the pressurized air for releasing the excessive pressure.

An article having a cavity with a thin bottom wall is provided by assembling a thin sheet, for example, a metal sheet, adjacent the surface of a member having one or more apertures extending to that surface. A bonding adhesive is interposed between the thin sheet and the subadjacent member and the thin sheet is subjected to a high fluid pressure to subject the assembly to a high differential pressure to laminate the thin sheet to the member. In order to prevent the differential pressure from bei...

Prior-art systems for drainage of body cavities, in particular renal cavity systems, have usually comprised of a flexible drainage tube (1) with at least one crooked end (11, 13), a tubular device, called a pusher (2), serving to push the drainage tube (1) into a body cavity, a distal end of which is connected in a separable way with a proximal end of the drainage tube (1), and a guide wire (3) passing through the drainage tube (1) and the pusher (2). Up to now, the separable connection consiste...

The invention comprises an inner and outer tube provided on their facing surfaces with canted projections which, in ratchet-like fashion, permit movement in one direction but not the other. The outer tube may be sutured to the skin and, in the event of distention of the abdomen due to gas, the outer tube will merely slide over the inner tube; in the absence of the outer tube, such distention would serve to pull the tube out of the organ to which it extends.

A volume reflector which may be employed as one or both of the end mirrors of a laser cavity. A laser cavity is provided including an active medium which is excited to produce stimulated emissions of light. A reflective means is located at each end of the cavity to reflect the light back into the cavity. One or both of the reflective means is an acoustic cell which is connected to a source of input signal, preferably at a microwave frequency. When particular relationships are satisfied, the ligh...

Tapered cavities are lined with a plastic liner such as a reducer filler flange by forcing a deformable plastic tube into the cavity to reduce the diameter of at least the portion of the tube which passes through the cavity and flanges are formed on the plastic tube.

A device for rinsing the bucal cavity which comprises a mouthpiece adapted to be fitted into the mouth and provided with discharge ports trained upon the teeth and gums of the user, a connection fitting adapted to be placed upon a faucet spigot, a line connecting the mouthpiece with this fitting, and a control valve along the line for selectively connecting the mouthpiece via a venturi to a dispenser for a mouth-treating liquid, to a discharge port opening into the wash basin, and to the mouthpi...

Cavities are lined by means of apparatus which is inserted in the cavity and expanded to apply lining material, placed between apparatus and cavity wall, onto the wall of the cavity.

An apparatus for removal, by scraping or cutting, of a sample of the internal wall of body cavities and collecting the sample in a container. It consists of a cylindrical container, adapted to be held in one hand and carrying a cannula, the end of which is closed, with a sharp-edged slot being provided closely behind the end. The cannula, during use, is rigidly connected with the container so that it can be manoeuvered therewith using the container as a handle device. The container has a sieve t...